public class YangHui {
    public static void main(String[] args) {
        int[][] arr = new int[10][];
        for (int i=0; i<arr.length; i++){
            arr[i] = new int[i+1];
            for (int j=0; j<arr[i].length; j++){
                if (i <=1){
                    arr[i][j] = 1;
                    continue;
                }else {
                    if (j==0 || j==arr[i].length-1){
                        arr[i][j] = 1;
                    }else {
                        arr[i][j] = arr[i-1][j-1] + arr[i-1][j];
                    }
                }
            }
        }

        for (int i=0; i< arr.length; i++){
            for (int j=0; j<arr[i].length; j++){
                System.out.print(arr[i][j] + "\t");
            }
            System.out.println();
        }

    }
}
